Variation of Cranial Base Morphology among Different Sagittal Skeletal Malocclusion � A Cephalometric Study in Nepalese Population

2019 ◽  
Vol 33 (1) ◽  
pp. 19-24
Author(s):  
Ravi Kumar Mahto ◽  
Dashrath Kafle ◽  
Singh Pankaj Kumar ◽  
Siddhartha Khanal ◽  
Sonika Khanal ◽  
...  
Keyword(s):  
Cranial Base ◽  
Skeletal Malocclusion ◽  
Cephalometric Study

scholarly journals Evaluating condylar position in different skeletal malocclusion patterns: A cephalometric study

2015 ◽  
Vol 5 ◽  
pp. 111-115
Author(s):  
Sandesh S. Hegde ◽  
Ameet V. Revankar ◽  
Anand K. Patil
Keyword(s):  
Negative Correlation ◽  
Significant Negative Correlation ◽  
Cranial Base ◽  
Class Iii ◽  
Skeletal Malocclusion ◽  
Distribution Of Values ◽  
Significant Difference ◽  
Condylar Position ◽  
Cephalometric Study ◽  
Anterior Posterior

Context The cranial base and variations in its morphology affect the anterior-posterior positioning of jaws causing changes in the glenoid fossa and condylar position. Aims To evaluate the condylar position in patients with different skeletal sagittal malocclusion patterns. Materials and Methods Pretreatment lateral cephalometric radiographs of 112 subjects (both males and females) were categorized into three classes (Class I, Class II, Class III) based on their ANB angulation and studied for N-S-Ar (saddle angle), S-Ar-Go (articular angle), S-Ar (posterior cranial base length). Statistical Analysis Shapiro-Wilk test was done to check for normality of the distribution of values. Groups were evaluated using parametric tests (one-way ANOVA). Significance for all tests was predetermined as P < 0.05. Results N-S-Ar and S-Ar-Go and also S-Ar did not vary significantly in all the three classes. N-S-Ar and S-Ar-Go angles have shown a significant negative correlation in all the three classes. Conclusions There is no significant difference in condylar position in different skeletal malocclusion patterns. N-S-Ar and S-Ar-Go angles show a negative correlation in any skeletal malocclusion pattern.

scholarly journals Relationship between anterior occlusion and frontal sinus size

2017 ◽  
Vol 87 (5) ◽  
pp. 752-758 ◽  
Author(s):  
Omar T. Said ◽  
P. Emile Rossouw ◽  
Leonard S. Fishman ◽  
Changyong Feng
Keyword(s):  
Frontal Sinus ◽  
Pairwise Comparison ◽  
Cranial Base ◽  
Class I ◽  
Maxillary Incisor ◽  
Skeletal Malocclusion ◽  
Edge Group ◽  
Anterior Cranial Base ◽  
Significant Difference ◽  
Incisor Inclination

ABSTRACT Objective: To determine the relationship between anterior occlusion and frontal sinus size. Methods: The patient database at the Eastman Institute for Oral Health, University of Rochester, was searched for male patients older than 15 years and females older than 13 years of age. After applying inclusion and exclusion criteria, participants' photos and lateral cephalometric and posteroanterior radiographs were examined then classified into a control class I group (n = 20, 15.7 ± 2.7 years) and eight malocclusion groups (n = 136, 16.1 ± 2.1 years). The frontal sinus area on the lateral cephalometric radiograph and on the posteroanterior radiograph were measured and compared between groups. Results: One-way analysis of variance demonstrated a significant difference among all nine groups (P = .0001). Pairwise comparison showed a significant difference between the class I group and all other malocclusion groups (P &lt; .05) except the edge-to-edge group for both radiographs and except the bimaxillary protrusion group for the lateral cephalometric radiographs. Tukey's method was not able to demonstrate a significant difference among the subgroups of skeletal malocclusions (P &gt; .05). Linear regression analyses with stepwise model selection demonstrated that anterior cranial base, mandibular plane angle, and upper incisor inclination commonly have a significant effect on frontal sinus size. Conclusion: The frontal sinus size could be used as an indicator of harmonious anterior occlusion. There were no differences among the subgroups of each skeletal malocclusion. The anterior cranial base, facial height, and maxillary incisor inclination appear to have a significant effect on frontal sinus size.

scholarly journals Original Research. Correlation Between Cranial Base Morphology And Various Types Of Skeletal Anomalies

2017 ◽  
Vol 2 (s1) ◽  
pp. 57-61
Author(s):  
Irinel Panainte ◽  
Victor Suciu ◽  
Krisztina-Ildikó Mártha
Keyword(s):  
Class Ii ◽  
Cranial Base ◽  
Class I ◽  
Original Research ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Division 1 ◽  
Base Of The Skull ◽  
Cephalometric Study ◽  
Division 2

Abstract Background: Previous studies regarding various types of malocclusions have found correlations between the angle of the base of the skull and prognathism. Aim of the study: This cephalometric study sought to investigate the function of the cranium base angle in different types of malocclusion on a group of Romanian subjects. Materials and methods: Forty-four cephalometric radiographs were selected from patients referred to orthodontic treatment. The cephalometric records were digitized, and with the CorelDRAW Graphics Suite X5 software 22 landmarks have been marked on each radiograph. A number of linear and angular variables were calculated. Results: The angle of the base of the skull was found to be higher in Class II Division 1 subjects compared to the Class I group. The cranial base lengths, N-S and S-Ba, were significantly larger in both categories of Class II malocclusion than in Class I patients, but measurements were comparable in Class I and Class III. The SNA angle showed no considerable variation between Class I subjects and the other groups. SNA-SNP was significantly increased above Class I values in Class II Division1 and Class II Division 2 groups. No significant dissimilarities were observed for these lengths between Class I and Class III patients. Conclusions: The angle of the cranium base (S-N-Ba, S-N-Ar) does not have a major role in the progression of malocclusion. In Angle Class II malocclusion the SNA angle is increased, and SNB is increased in malocclusion Class III. The anterior skull base length is increased in Class II anomalies. The length of the maxillary bone base is increased in Class II malocclusions type; in Class III type of malocclusion the length of the mandible bone is increased.

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